Adaptive interface device compatible with different pressure sensors

Abstract

The invention belongs to the technical field of aircraft guidance and control, and particularly relates to an adaptive interface device compatible with different pressure sensors. The core point of the invention is to provide a sensor access judgment module design scheme based on a nonvolatile memory pre-stored sensor type. The key points of the invention are that a sensor is equipped with a printed circuit board, a signal processing circuit analog and digital conversion module and a sensor access judgment module in a matched way, an adaptive interface compatible with different pressure sensors is realized, and the problem that signal processing circuit hardware design and software design depends on a concrete pressure sensor type is solved. The requirements of installing (matching) different types of pressure sensors of an atmospheric measurement device under the premise of not changing software and hardware are satisfied.

Description

technical field [0001] The invention belongs to the technical field of aircraft guidance and control, and in particular relates to an adaptive interface device compatible with different pressure sensors. Background technique [0002] Atmospheric measurement device is an important part of the aircraft guidance and control system, mainly composed of resonant cylinder pressure sensor, signal processing circuit and supporting software, among which the resonant cylinder pressure sensor is the core component of the atmospheric measurement device, mainly used for sensitive bleed air device introduction Atmospheric pressure, convert gas signal to electrical signal output. The signal processing circuit collects the frequency signal and temperature voltage signal output by the pressure sensor, and the software combines the sensor calibration parameters to calculate the pressure value to be measured. [0003] The output temperature and voltage signals of different types of resonant cy...

AI Technical Summary

Problems solved by technology

[0003] The output temperature and voltage signals of different types of resonant cylinder pressure sensors are divided into two types according to the interface: 0.4V ~ 0.8V and 4V ~ 8V. In the design of atmospheric measurement devices in the past, for different pressure sensor output voltage signal interfaces, the signal processing circuit must be adjusted to correspond to the analog Quantity-to-digital conversion interface design, the corresponding software also needs to be adaptively changed. This design scheme of pressure sensor-signal processing circuit-software coupling cannot meet the requirements of different temperature and voltage signal interface pressure sensors for dynamic supporting atmospheric measurement devices. Reduced atmospheric measurement device maintainability

Images